A damp course is the barrier that stops wet rising up a wall. Check the damp course.
It is a layer built into the brickwork, usually a couple of courses above the ground. A damp course is defeated by piling soil or a new path above it, which happens constantly.
1noundamp courseThe barrier that stops wet rising up a wall.
“The damp course had been bridged by the new patio.”
damp course is a barrier.
Practised in Tools & DIY